I know there's a way to scale along the median point of an object's virtual geometry and actual geometry combined, which is here:

Scale about true center with Mirror modifier

But it's not very quick, especially if you have a lot of parts to scale near the center of your mirrored mesh. Quicker means better productivity, so it should be in my interests to become quicker while keeping quality high. Is there something I can use, maybe Python code or a plugin, to allow for this or a similar process to be done automatically, for example, when I select something and press a keyboard shortcut?

Thank you very much for any help. :)

I know there's a way to scale along the median point of an object's virtual geometry and actual geometry combined, which is here:

Scale about true center with Mirror modifier

But it's not very quick, especially if you have a lot of parts to scale near the center of your mirrored mesh. Quicker means better productivity, so it should be in my interests to become quicker while keeping quality high. Is there something I can use, maybe Python code or a plugin, to allow for this or a similar process to be done automatically, for example, when I select something and press a keyboard shortcut?

Thank you very much for any help. :)